Device for positioning the knitting cam in circular knitting and stocking knitting machines

Abstract

A device is disclosed for positioning a knitting cam in circular knitting and stocking knitting machines. The knitting cam (11) is fixed to a slide (13), which can be moved on a support (15) by means of an eccentric ring rotated by a motor. The slide with knitting cam is provided with a first needle (18), resting on and following the eccentric inner profile of a second needle (19) resting on and following the outer surface of the eccentric ring (17) so as to move and position the slide in response to the rotation of the ring.

What is claimed is: 
     
       1. A device for positioning a knitting cam in circular knitting or stocking knitting machines, comprising: a guiding slide;   a knitting cam;   a related countercam, said knitting cam being fixed with said related countercam to said guiding slide;   a support, said guiding slide being movable on said support; and   a motor, movements of said guiding slide for a positioning of said knitting cam being determined by said motor, said motor having an outlet shaft that carries a controlling, rotating, annular element having a slot with an eccentric or spiral-shaped inner profile and an outer surface parallel to the inner profile, said guiding slide having a first needle or bearing resting on and following said eccentric inner profile and a second needle or bearing that rests on and follows said outer surface of said annular element on a face of said second needle or bearing turned toward said controlling annular element so as to move and position said slide in response to the rotation of said annular element.   
     
     
       2. A device in accordance with claim 1, wherein said first needle or bearing and said second needle or bearing are mounted on parallel shafts and with adjustable distance between centers, one of said shafts being able to be moved in parallel and in relation to the other. 
     
     
       3. A circular knitting or stocking knitting machine device for positioning a knitting cam, the device comprising: a guiding slide;   a knitting cam;   a related countercam, said knitting cam being fixed with said related countercam to said guiding slide;   a support, said guiding slide being movable on said support;   a motor, said motor having an outlet shaft;   rotating annular element carried by said outlet shaft, said annular element having an eccentric or spiral-shaped inner profile and an outer surface following said inner profile;   a first bearing connected to said guiding slide, said first bearing resting on and following said eccentric inner profile; and   a second bearing connected to said guiding slide, said second bearing having a surface turned toward said annular element and resting on and following said outer surface of said annular element so as to move and position said slide in response to the rotation of said annular element.   
     
     
       4. A device in accordance with claim 3, wherein said first bearing and said second bearing are mounted on parallel shafts and with adjustable distance between centers, one of said shafts being able to be moved in parallel and in relation to the other.